Stem and Leaf Plot.

A stem and leaf plot is a special table where each data value is split into a “ stem “  ( the first digit or digits ) and a “ leaf “ ( usually the last digit )

For example: 32 is split “ 3 “ ( stem )  and “ 2 “ ( leaf )

15,16,21,23,23,26,26,30,32,41

Stem            Leaf

1                    5 6

2                 1 3 3 6 6

3                   0 2

4                      1

Sam got his friends to do a long jump and got these results.

Results 2.3, 2.5, 2.5, 2.7, 2.8, 3.2, 3.6, 4.5, 5.0

Stem                    Leaf

2                         3,5,5,7,8

3                            2,6

4                              5

5                              0

Terrific Tautua.

Esther works for the Ministry of Fisheries.

She is studying the tautua that are found at Kamari Beach. She searches for tautua on the beach and measures the length of the shells.

Esther collects the data and puts it onto a stem and leaf graph.

Size of tautua.

Stem                                 Leaf

2                                        5,8,8,8,9

3                                       2,4,4,5,5,7

4                                       0,1,1,3,3,4,6,9

5                                     0,0,0,0,1,2,5,8,8,9

6                                      0,1,1,2

Questions

1. How many tautua did Esther count?

2. What was the smallest tautua shell she found?

3. What is the most common shell size Esther found?

4. Put all the shell lengths in order from the shortest to longest.

What is the length that comes in the middle value in an ordered list of things is called median.

5. Show this data in another type of graph.